20556380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79063}}^1$

素因数の和:79085

約数の個数: 24

約数和(自身を含む): 46489632

約数和(自身を除く): 25933252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79063, 158126, 316252, 395315, 790630, 1027819, 1581260, 2055638, 4111276, 5139095, 10278190, 20556380]

約数ペア:

[(1, 20556380), (2, 10278190), (4, 5139095), (5, 4111276), (10, 2055638), (13, 1581260), (20, 1027819), (26, 790630), (52, 395315), (65, 316252), (130, 158126), (260, 79063)]